The shape of town is the main issue which planners deal with. The function of some buildings and urban facilities is flexible, it changes in time. The appearance of city public areas and, what follows, the life conditions of its inhabitants, depends on elements of the town structure - the surrounding buildings, their density, state and form. All lasting elements of the city form its shape which reflects urban processes which have been taking place over ages. The aim of this paper is to define how latest computer technology can be used as an aid in the evaluation of the town landscape.